1) Calculate the divisions 5 – 3i/2 + i 4i/2 -i 2) Solve the quadratic equations: x2 + 2x + 3 = 0 X2 + 4x + 5 = 0
Follow Math Help Forum on Facebook and Google+
Originally Posted by Kblack 1) Calculate the divisions 5 – 3i/2 + i 4i/2 -i 2) Solve the quadratic equations: x2 + 2x + 3 = 0 X2 + 4x + 5 = 0 Use the quadradic formula and post what you get so we can check.
Originally Posted by Kblack 1) Calculate the divisions 5 – 3i/2 + i 4i/2 -i to divide by a complex number, we multiply by it's conjugate over itself, thus: $\displaystyle \frac {5 - 3i}{2 + i} = \frac {5 - 3i}{2 + i} \cdot \frac {2 - i}{2 - i}$ and $\displaystyle \frac {4i}{2 - i} = \frac {4i}{2 - i} \cdot \frac {2 + i}{2 + i}$ now simplify
View Tag Cloud